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https://github.com/element-hq/element-web.git
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68 lines
2.3 KiB
TypeScript
68 lines
2.3 KiB
TypeScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React from "react";
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import { replaceableComponent } from "../../../utils/replaceableComponent";
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import { arraySeed, arrayTrimFill } from "../../../utils/arrays";
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import Waveform from "./Waveform";
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import { Playback, PLAYBACK_WAVEFORM_SAMPLES } from "../../../voice/Playback";
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import { percentageOf } from "../../../utils/numbers";
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interface IProps {
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playback: Playback;
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}
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interface IState {
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heights: number[];
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progress: number;
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}
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/**
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* A waveform which shows the waveform of a previously recorded recording
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*/
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@replaceableComponent("views.audio_messages.PlaybackWaveform")
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export default class PlaybackWaveform extends React.PureComponent<IProps, IState> {
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public constructor(props) {
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super(props);
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this.state = {
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heights: this.toHeights(this.props.playback.waveform),
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progress: 0, // default no progress
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};
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this.props.playback.waveformData.onUpdate(this.onWaveformUpdate);
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this.props.playback.clockInfo.liveData.onUpdate(this.onTimeUpdate);
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}
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private toHeights(waveform: number[]) {
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const seed = arraySeed(0, PLAYBACK_WAVEFORM_SAMPLES);
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return arrayTrimFill(waveform, PLAYBACK_WAVEFORM_SAMPLES, seed);
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}
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private onWaveformUpdate = (waveform: number[]) => {
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this.setState({ heights: this.toHeights(waveform) });
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};
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private onTimeUpdate = (time: number[]) => {
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// Track percentages to a general precision to avoid over-waking the component.
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const progress = Number(percentageOf(time[0], 0, time[1]).toFixed(3));
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this.setState({ progress });
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};
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public render() {
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return <Waveform relHeights={this.state.heights} progress={this.state.progress} />;
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}
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}
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